Table 1.

Biomarkers of oxidative stress in gingival tissue of healthy control and individuals with periodontal disease. The results are represented by means $\pm$ SEM of controls (healthy individuals) and patients with periodontal diseases (E). CAT = Activities of Catalase, GPx = glutathione peroxidase, GST = glutathione S-transferase, GR = glutathione reductase, MPO = myeloperoxidase, TG = total glutathione, GSH = glutathione.

	Control	Experimental	$P$
CAT (mmol min−1g−1)	$1.64\pm 0.46$	$2.00\pm 0.30$	.523
GPx ($\mu$mol min−1g−1)	$0.80\pm 0.11$	$2.09\pm 0.34$	.006***
GST ($\mu$mol min−1g−1)	$4.28\pm 0.89$	$10.81\pm 0.63$	.001***
GR ($\mu$mol min−1g−1)	$0.28\pm 0.04$	$0.22\pm 0.06$	.481
MPO (mU/mL)	$222.20\pm 54.00$	$556.44\pm 76.77$	.003***
TG ($\mu$mol g−1)	$0.44\pm 0.11$	$0.63\pm 0.09$	.171
GSH ($\mu$mol g−1)	$0.38\pm 0.08$	$0.46\pm 0.06$	.459
SSG ($\mu$mol g−1)	$0.06\pm 0.01$	$0.17\pm 0.04$	.019***
TBARS (nmol g−1)	$113.07\pm 16.59$	$188.80\pm 20.73$	.015***

***($P<.001$) mean statistical differences between controls and experimental group.